If you're on stock fueling and dme management (with regards to E85), your car is going to be an unhappy camper with 100% e85 on a cold start. I can't say i've ever tried anywhere near that aggressive a mixture, but I don't think there's anything abnormal about your experience...call me crazy, but don't you have flexfuel lines? I seem to remember a thread or post from you about them. Could just be the food coma i'm in from xmas eve dinner lol.